The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

Abstract

Abstract:In this study a photocatalytic performance of new carbon-modified titanium dioxide photocatalysts was discussed. Benzene was used as carbon precursor. It was found that the photocatalytic activity of obtained samples increases with the increase of modification temperature and decrease of carbon concentration present in TiO 2 /C samples. This could be related to the kind of interactions between TiO 2 surface and carbon from thermal decomposition of benzene. The higher calcination temperature the less carbon deposits on the surface of modified samples and the higher probability of the Ti and C interaction confirmed by means of UV-vis/DR studies. It was proved that the photocatalytic activity of carbon modified titania nanomaterials strongly depends on carbon content in TiO 2 /C photocatalysts. Modification of starting TiO 2 with benzene is a promising method especially by taking into account the mineralization of phenol and the co-products of its degradation.

Photocatalytic degradation of acetic acid in the presence of visible light-active TiO 2 -reduced graphene oxide photocatalysts

“…It was found that the material contains 0.96 wt.% of carbon what was reported in our previous paper [30]. Fig.…”

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

“…Anthracene (with a chemical purity >99%) purchased from Avantor Performance Materials Poland S.A. was used as carbon source. In our previous papers (7,9) benzene and naphthalene modification of TiO 2 was described. Mainly because of this reason the arene with three benzene rings was utilized as a carbon precursor.…”

“…It was found that TiO 2 modification by non-metals such as carbon (3) causes light absorption in the visible region. For this purpose different inorganic and organic carbon precursors were used (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21). Wide range of used precursors make it possible to widen TiO 2 activation range of irradiation to visible region.…”

Photocatalytic performance of thermally prepared TiO 2 /C photocatalysts under artificial solar light

“…Photocatalytic process using TiO 2 as a photocatalyst is one of the most effective methods for degradation of organic contaminations such as: phenol [1–4], pesticides [5, 6], dyes [7–10], drugs [11] or bacteria and viruses [12, 13]. Photocatalysis is an economic method where pollutants are converted into simple chemicals such as carbon dioxide, water and non‐toxic mineral acids [14, 15].…”